A fully open source programmable power supply offering professional lab-quality features and performance

In this update, we celebrate reaching the third stretch goal, discuss
pricing after the campaign, and do some show and tell with the new
waveform generation feature.

Third Stretch Goal Reached!

You did it again, the third and last stretch goal has been reached. It
brings dual range current measurement and some further changes of the
power board, such as modification of the heatsink (it’s now 15 mm
longer but still compatible with older boards).

Campaign Pricing Ends Soon

If you want an EEZ H24005, the time is now! The pre-order price after
the campaign will jump from $399 to $450. The final retail price will
be at least $499, possibly higher. Ordering now will help us hit a
higher minimum order quantity (e.g., 500 instead of 250) and ensure we
can keep the EEZ H24005 in production.

We originally thought this would be a one-time manufacturing run, but
we’ve been greatly encouraged by the support we’ve received so far to
go for a larger production run and keep the project going beyond the
campaign. Get the EEZ H24005 while the getting is good and help
support the future of the project!

Digitally Controlled Output Waveforms

In our fourth update, you had a chance
to see how to change output the voltage with an external
analog signal. By adding an arbitrary waveform generator, the EEZ H24005
will offer even more freedom and flexibility, not just for output
voltage but also for current programming. It can be used for automated
testing and battery charging, and even coupled with an external
trigger. As usual, we started by adding the necessary SCPI subset for
this new feature. The next step will be the GUI. Support for multiple
waveform lists (limited only by SD card storage, which is itself huge!) is
currently under development. Please note that, due to limitations of the MCU and
display, such waveform generation is limited to a maximum number of set
points (by default set to 256) and frequency. You can see below a few
examples of what is possible to generate right now with the latest
firmware build using these simple sequences of SCPI commands:

Envox d.o.o. is home of the Envox Experimental Zone (EEZ), an open source initiative to bridge the gap between DIY / hobbyist / educational / low-budget and professional / commercial test and measurement solutions.